Consolidated Statements of Convertible Preferred Stock and Stockholders’ Equity (Deficit) - USD ($) $ in Thousands	Total	Series A Convertible Preferred Stock	Series B Convertible Preferred Stock	Series AA Convertible Preferred Stock	Series C Convertible Preferred Stock	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive (Loss) Income	Retained Earnings (Accumulated Deficit)
Beginning balance, (in shares) at Dec. 31, 2018	74,406,000
Beginning balance at Dec. 31, 2018	$ 120,296
Increase (Decrease) in Temporary Equity [Roll Forward]
Issuance of convertible preferred stock, net of issuance costs (in shares)		23,527,000	23,930,000	30,253,000
Issuance of convertible preferred stock, net of issuance costs		$ 89,380	$ 162,018	$ 146,325
Deemed dividends on issuance of Series A convertible preferred stock		1,144
Ending balance, (in shares) at Dec. 31, 2019	152,116,000
Ending balance at Dec. 31, 2019	$ 519,163
Beginning balance (in shares) at Dec. 31, 2018						1,092,000
Beginning balance at Dec. 31, 2018	850					$ 0	$ 826	$ 0	$ 24
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Deemed dividends on issuance of Series A convertible preferred stock	(1,144)						(826)		(318)
Issuance of common stock to strategic partners (in shares)						910,000
Issuance of common stock to strategic partners	2,562						2,562
Repurchase of common stock	(185)						(185)
Stock-based compensation (in shares)						9,179,000
Stock-based compensation	15,732					$ 1	15,731
Other comprehensive loss	454							454
Net loss	(129,377)								(129,377)
Ending balance (in shares) at Dec. 31, 2019						11,181,000
Ending balance at Dec. 31, 2019	$ (111,108)					$ 1	18,108	454	(129,671)
Increase (Decrease) in Temporary Equity [Roll Forward]
Issuance of convertible preferred stock, net of issuance costs (in shares)					42,905,000
Issuance of convertible preferred stock, net of issuance costs					$ 492,467
Repurchase of convertible preferred stock (in shares)	(547,000)
Repurchase of convertible preferred stock	$ (662)	$ (700)
Ending balance, (in shares) at Dec. 31, 2020	194,474,000
Ending balance at Dec. 31, 2020	$ 1,010,968
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock to strategic partners (in shares)						275,000
Issuance of common stock to strategic partners	1,004						1,004
Issuance of common stock for asset acquisition (in shares)						688,000
Issuance of common stock for asset acquisition	4,000						4,000
Issuance of common stock upon exercise of stock options (in shares)						113,000
Issuance of common stock upon exercise of stock options	373						373
Repurchase of convertible preferred stock	(3,582)						(3,582)
Repurchase of common stock (in shares)						(2,032,000)
Repurchase of common stock	(11,806)						(11,806)
Stock-based compensation (in shares)						5,345,000
Stock-based compensation	33,261					$ 1	33,260
Other comprehensive loss	(198)							(198)
Net loss	(204,472)								(204,472)
Ending balance (in shares) at Dec. 31, 2020						15,570,000
Ending balance at Dec. 31, 2020	$ (292,528)					$ 2	41,357	256	(334,143)
Increase (Decrease) in Temporary Equity [Roll Forward]
Conversion of convertible preferred stock to common stock (in shares)	(194,474,000)
Conversion of convertible preferred stock to common stock	$ (1,010,968)
Ending balance, (in shares) at Dec. 31, 2021	0
Ending balance at Dec. 31, 2021	$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Proceeds from initial public offering, net of issuance costs (in shares)						25,000,000
Proceeds from initial public offering, net of issuance costs	391,802					$ 2	391,800
Conversion of convertible preferred stock to common stock (in shares)						194,474,000
Conversion of convertible preferred stock to common stock	$ 1,010,968					$ 20	1,010,948
Issuance of common stock upon exercise of stock options (in shares)	2,750,380					2,750,000
Issuance of common stock upon exercise of stock options	$ 9,442						9,442
Stock-based compensation (in shares)						4,944,000
Stock-based compensation	62,201						62,201
Other comprehensive loss	(1,879)							(1,879)
Net loss	(250,219)								(250,219)
Ending balance (in shares) at Dec. 31, 2021						242,738,000
Ending balance at Dec. 31, 2021	$ 929,787					$ 24	$ 1,515,748	$ (1,623)	$ (584,362)